diff options
| author | Sergey Senozhatsky <senozhatsky@chromium.org> | 2022-01-19 11:14:17 +0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@kernel.org> | 2022-03-07 13:05:17 +0300 |
| commit | 553189144c9e27bf047b392ae377c522246076f7 (patch) | |
| tree | cab9c69688db6bee26aa45a4c9570c4f71844808 /drivers/media | |
| parent | 68d0c3311ec10c14a908e96c1e0b95550fa02999 (diff) | |
| download | linux-553189144c9e27bf047b392ae377c522246076f7.tar.xz | |
media: videobuf2-dma-contig: Invalidate vmap range before DMA range
Christoph suggests [1] that invalidating vmap range before
direct mapping range makes more sense.
[1]: https://lore.kernel.org/all/20220111085958.GA22795@lst.de/
Signed-off-by: Sergey Senozhatsky <senozhatsky@chromium.org>
Acked-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Diffstat (limited to 'drivers/media')
| -rw-r--r-- | drivers/media/common/videobuf2/videobuf2-dma-contig.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/drivers/media/common/videobuf2/videobuf2-dma-contig.c b/drivers/media/common/videobuf2/videobuf2-dma-contig.c index 7c4096e62173..0e3f264122af 100644 --- a/drivers/media/common/videobuf2/videobuf2-dma-contig.c +++ b/drivers/media/common/videobuf2/videobuf2-dma-contig.c @@ -132,12 +132,12 @@ static void vb2_dc_prepare(void *buf_priv) if (!buf->non_coherent_mem) return; - /* For both USERPTR and non-coherent MMAP */ - dma_sync_sgtable_for_device(buf->dev, sgt, buf->dma_dir); - /* Non-coherent MMAP only */ if (buf->vaddr) flush_kernel_vmap_range(buf->vaddr, buf->size); + + /* For both USERPTR and non-coherent MMAP */ + dma_sync_sgtable_for_device(buf->dev, sgt, buf->dma_dir); } static void vb2_dc_finish(void *buf_priv) @@ -152,12 +152,12 @@ static void vb2_dc_finish(void *buf_priv) if (!buf->non_coherent_mem) return; - /* For both USERPTR and non-coherent MMAP */ - dma_sync_sgtable_for_cpu(buf->dev, sgt, buf->dma_dir); - /* Non-coherent MMAP only */ if (buf->vaddr) invalidate_kernel_vmap_range(buf->vaddr, buf->size); + + /* For both USERPTR and non-coherent MMAP */ + dma_sync_sgtable_for_cpu(buf->dev, sgt, buf->dma_dir); } /*********************************************/ |